Question: When did the Central Bohemian Region reach a population of 1.3 million?
Paraphrase: The Central Bohemian Region attained a population of 1.3 million in what year?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q188399 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '1.3153e+06')) . ?s pq:P585 ?value}